在Android Studio中显示多个每日重复通知

Question

在我的应用程序中，我想根据用户的需要显示任意数量的每日通知（这是一种医疗提醒）。用户还设置新通知的时间。但我的应用程序目前只显示一个最新通知。你能帮我解决这个问题吗？

我创建新通知的代码（set小时等由用户预先设置）：

Calendar calendar = Calendar.getInstance();
                    calendar.set(Calendar.HOUR_OF_DAY, setHour);
                    calendar.set(Calendar.MINUTE, setMinute);
                    calendar.set(Calendar.SECOND, 0);
                    Intent intent1 = new Intent(ReminderActivity.this, AlarmReceiver.class);
                    PendingIntent pendingIntent = PendingIntent.getBroadcast(ReminderActivity.this, MID,intent1, 0);
                    AlarmManager am = (AlarmManager) ReminderActivity.this.getSystemService(ReminderActivity.this.ALARM_SERVICE);
                    am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent);

和我的AlarmReceiver：

public class AlarmReceiver extends BroadcastReceiver {
    public static int MID = 0;
    private static final String CHANNEL_ID = "this.is.my.channelId";
    @Override
    public void onReceive(Context context, Intent intent) {
        Intent notificationIntent = new Intent(context, MainActivity.class);

        TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
        stackBuilder.addParentStack(MainActivity.class);
        stackBuilder.addNextIntent(notificationIntent);

        PendingIntent pendingIntent = stackBuilder.getPendingIntent(MID, 0);

        Notification.Builder builder = new Notification.Builder(context);

        Notification notification = builder.setContentTitle("Notification")
                .setContentText("New Notification")
                .setTicker("New Message Alert!")
                .setSmallIcon(R.mipmap.ic_launcher)
                .setVibrate(new long[]{1000, 1000, 1000, 1000, 1000})
                .setContentIntent(pendingIntent).build();

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            builder.setChannelId(CHANNEL_ID);
        }

        NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
//below creating notification channel, because of androids latest update, O is Oreo
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel(
                    CHANNEL_ID,
                    "NotificationDemo",
                    NotificationManager.IMPORTANCE_DEFAULT
            );
            notificationManager.createNotificationChannel(channel);
        }

        notificationManager.notify(MID, notification);
        MID++;
    }
}

Answer 1

在此处创建挂起内容时

PendingIntent pendingIntent = PendingIntent.getBroadcast(ReminderActivity.this, MID,intent1, 0);

请检查您没有传递相同的请求代码。在这种情况下，Android“重用”了之前创建的挂起的意图，这就是为什么您只会看到最新的通知，而不会看到多个通知。

避免该问题的最简单方法似乎是传递不同的请求代码（或其他参数，例如differentsetAction（…） -请参阅下面的链接）以获取每种类型的通知。

有关更多信息，请查看Android如何比较待定意图：https://stackoverflow.com/a/20205696/2219237